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7 Completează casetele libere cu numere corespunzătoare, pentru a obține propoziții adevărate a. 45:5+10:5= (45+10): 5 7 64:8-32:8 (64-32): 8 = b. (42-35): 42 = 35:7- 35:7 (63- D :9= :9 + :9​

Răspuns :

Respectăm ordinea efectuării operațiilor

[tex]a) \ \bf \underline{45 : 5} + \underline{10 : 5} = \underline{\Big(\boxed{\boldsymbol{ \red{ 2 }} } + 10\Big)} : \boxed{\boldsymbol{ \red{ 2 }} }[/tex]

[tex]9 + 2 = 22 : 2[/tex]

[tex]11 = 11 \to (corect!)[/tex]

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[tex]\bf \underline{64 : 8} - \underline{\boxed{\boldsymbol{ \red{ 32 }} } : 8} = (\underline{64-32}) : \boxed{\boldsymbol{ \red{ 8 }} }[/tex]

[tex]8 - \underline{32 : 8} = 32 : 8[/tex]

[tex]8 - 4 = 4[/tex]

[tex]4 = 4 \to (corect!)[/tex]

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[tex]b) \ \underline{(42-35)} : \boxed{\boldsymbol{ \red{ 7 }}} = \underline{\boxed{\boldsymbol{ \red{ 14 }}} : 7} - \underline{\boxed{\boldsymbol{ \red{ 7 }}} : 7}[/tex]

[tex]7 : 7 = 2 - 1[/tex]

[tex]1 = 1 \to (corect!)[/tex]

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[tex]\underline{\Big(63-\boxed{\boldsymbol{ \red{ 36 }}}\Big)} : 9 = \underline{\boxed{\boldsymbol{ \red{ 18 }}} : 9} + \underline{\boxed{\boldsymbol{ \red{ 9 }}} : 9}[/tex]

[tex]27 : 9 = 2 + 1[/tex]

[tex]3 = 2 + 1[/tex]

[tex]3 = 3 \to (corect!)[/tex]

[tex]\bf a) \ \ \it 45:5+10:5=(45+10):5=55:5=11\\ \\ \bf b)\ \ \it (42-35):7=42:7-35:7=6-5=1[/tex]